9.12.11 no notes Camera Obscura Lab due tomorrow

1. 9.12.11 no notesCamera Obscura Lab due tomorrow Today: Recap for lab Optical Illusions

2. Data calculations • Hi is negative –upside down • Ho positive • M negative--<1, has no units • Di = 23 cm • All of the numbers in the same units

3. M = hi = - di ho do hi ho di do Rays are straight lines of light Notice that the rays from each edge of the object cross exactly at the pinhole when it is very small Be sure to draw in the image in the diagrams!!

4. M = hi = - di ho do hi ho do di When the pinhole is larger, More rays enter the pinhole from each spot on the object, What effect does that have on the image? Would the image be more or less clear? Would the image be more or less bright?

5. Conclusion..3 parts of purpose Confirm the linear propagation of light Calc. Magnification Calc. the Height of object

6. 3-D Images Stereoptics

7. Here you can see the two photos that the stereoscopic viewer helps your brain to process as a single 3D image.

9. Floating finger illusion • The Floating Finger • Hold together the ends of a finger from each hand about arms length in front of you.   Look under your fingers at some distant object.  The fingers will now appear in three sections.  Separate the fingers slightly and a finger with two fingernails will seem to be suspended between your two fingers

11. Stereoptic photos

12. Cross your eyes to view these images in stereo 3D • Cross your eyes to view these images in stereo 3D • 1280

13. Stereoptic

14. The treehouse bridge from the other side 1280

15. A path to the treehouse

16. Optical illusions Impossible stuff

17. The Falling Ball illusion : Is the ball really going down ?

18. Waterfall : Where does the water falls ?

19. Evanescence of LoveImpossible figures • How long would the heart carved on the tree last?

20. Crazy Gymnasts Impossible figures • Can you spot 3 problems with what's going on here

26. Illusion in or out?

27. Whats up??--illusion

28. "Flowers"

29. "Image in the Pattern?"

30. "Image in the Pattern?"

31. Optical illusion

32. You should see a girl, a wolf and a waterfall

33. 8 Faces Scenario : Can you find them all ?

34. Another Art Illusion

35. The Natural Baby

36. Flowers : Are they really just flower on the eye illusion? Look for the hidden faces.

37. Don Quijkote : Look closely. How many faces are there ?

38. Hidden Tigers : How can you find ? Concentrate

39. Horses and the Nature

40. The General's Family : There are 9 People in the picture below. Try to find them.

41. The Pirates : There are 11 faces in the picture below. How many of them can you find ?

42. Wolves : Can you find them ?

43. The Animal Kingdom : How many living things can you find in this picture? Possibly All !!!

44. Optical illusions Compare the size and shape

45. Larger?

46. Straight?

47. At first, there doesn't seem anything unusual about this picture.

48. Skewed lines All these tracks look as though they've come from a broken down railway track, but in actual fact, they are perfectly parallel! To prove they really are parallel, watch the small 'hairs' gradually disappear. You will see the lines as how you would expect them to be.

49. All of the red lines are completely parallel would you believe?

50. Illusions – size in perspective